In this universe, the worlds are split into 2 worlds: Elgaia and Tala.
Weapon ranks in Ascending order : Common, Uncommon, Rare, Unique, Legendary, Mythical, Divine, Eternal.
Skills are also ranked similar to the weapon rankings.
Weapon tiers are also low to middle to advanced to peak in their own ranks
There are 5 races, the Humans, the Devils, the Angels, the Dragons and the Beasts . Humans have a easier time adapting and copying techniques, Devils and Angels have an innate skill of [Charm] and are usually superior when compared to Humans but are weaker physically when compared to Dragons and Beasts, they are also inferior to Dragons in relatively anything to do with magic.
There are Demihuman races such as the Dwarves which are skilled in Smithing, the Elves which are good at engraving Inscriptions, the Kitsunes which are good at Spirit related things like Curses, Blessings and Spirit Manifestation and others.
The Creature's strength, no matter which race or of what kind are ranked based on Grades. The higher the Creature's Grade is the weaker the Creature is. Similarly, the lower the Creature's grade, the stronger the Creature is.
There are also monsters and other weird items the reader will encounter when reading this novel.
Update: I changed the way of higher grades mean stronger to lower grades instead.
Update: I'll be using the first few chapters as an explanation of
this/these world(s).